And methods for centrifugal compressor stability control system is operated in parallel

摘要

When either a centrifugal compressor, which is operated in parallel (108, 110) fell into unstable operation state, the control system to maintain a stable operating state centrifugal compressor (108, 110) is provided. Each compressor or power consumption of the motor current (108, 110), and signal to convey the information pre-rotation vane compressor (108, 110) and (120, 121) position control system, in (172, 174, 176, 178) to determine the instability accordingly. Once the instability is determined, the control system closes the pre-rotation vanes of the (108) and (120, 121) each compressor instability until to be corrected.